Superman Zero Hour

Time is collapsing in on itself. The villainous Extant has ushered in a series of black holes that are swallowing the universe--past, present and future Superman, like everyone else in the DC Universe, has seen time loops affect his life. The result? Krypton never exploded. The Kents never found a baby Kal-El in a field. Superman isnt the protector of Metropolis.